feat(service): add support for ipFamilyPolicy and ipFamilies

[barbirict]

This PR adds support for dual stack in the service. Before this PR it had to be set by manually editing the service config.
Closes #195

[cfis]

Thanks for adding this feature. But the PR contains a lot of unrelated whitespace changes. I'm ok with those also too, but this should at a minimum be 2 separate commits (or 2 PRs). Can you split it up?

[barbirict]

Thanks for adding this feature. But the PR contains a lot of unrelated whitespace changes. I'm ok with those also too, but this should at a minimum be 2 separate commits (or 2 PRs). Can you split it up?

Yeah sure, I'll split it up no problem :).

[Roger-Roger-debug]

This is all that's needed on the service side I think. One small note: Order determines preference when ipFamilyPolicy is PreferDualStack I think this applies to RequireDualStack as well?

[barbirict]

This is all that's needed on the service side I think. One small note: Order determines preference when ipFamilyPolicy is PreferDualStack I think this applies to RequireDualStack as well?

Yes you are correct, I made a typo. Will fix :).

[barbirict]

@cfis it's done!

[cfis]

Hmm, seems the same to me? But fine, I merged it. Thanks for the PR.

I saw you linked to #195. Seems like there would be some addition work in configuring dovecot?

[barbirict]

Hmm, seems the same to me? But fine, I merged it. Thanks for the PR.

I saw you linked to #195. Seems like there would be some addition work in configuring dovecot?

Hi thanks. Yeah I will look into dovecot and see what is there to do in the coming days.